JPS5633472A - Recycling and using method for washing waste water after isothermal hardening in salt bath carbonitriding or carburizing - Google Patents

Recycling and using method for washing waste water after isothermal hardening in salt bath carbonitriding or carburizing

Info

Publication number
JPS5633472A
JPS5633472A JP5406579A JP5406579A JPS5633472A JP S5633472 A JPS5633472 A JP S5633472A JP 5406579 A JP5406579 A JP 5406579A JP 5406579 A JP5406579 A JP 5406579A JP S5633472 A JPS5633472 A JP S5633472A
Authority
JP
Japan
Prior art keywords
salt bath
washing
carburizing
water
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5406579A
Other languages
Japanese (ja)
Other versions
JPS5745632B2 (en
Inventor
Shinichi Hoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAAKAA NETSUSHIYORI KOGYO KK
Parker Netsushori Kogyo KK
Original Assignee
PAAKAA NETSUSHIYORI KOGYO KK
Parker Netsushori Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PAAKAA NETSUSHIYORI KOGYO KK, Parker Netsushori Kogyo KK filed Critical PAAKAA NETSUSHIYORI KOGYO KK
Priority to JP5406579A priority Critical patent/JPS5633472A/en
Publication of JPS5633472A publication Critical patent/JPS5633472A/en
Publication of JPS5745632B2 publication Critical patent/JPS5745632B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions

Abstract

PURPOSE:To recover washing waste water as clear water and recycle a salt bath component dissolved in the waste water by washing away a carburizing component stuck to a material with a neutral salt bath after carburizing, hardening the material, cooling and washing it, and further washing it with water. CONSTITUTION:A material is carburized with carburizing salt bath A, dipped in neutral salt bath B to wash away the stuck carburizing component, hardened with isothermal salt bath C, cooled and washed in back washing vessel 1, and further washed with water in washing vessels 2, 3. Water of high salt concn. overflowing from vessel 1 is stored in waste water tank E once and fed into evaporation salt bath H equal to bath C in component and heated to 140-400 deg.C at a constant flow rate after being heated with heat exchanger G. Thus, the water is evaporated immediately. This steam is supplied to exchanger G, used as a heat source, condensed with condenser J, recovered in clear water tank L, and recycled. On the other hand, a salt bath component enriched excess of bath H is allowed to overflow, allowed to stand, dehydrated, and separated from undissolved components, etc. in standstill salt bath tank I heated to 200-500 deg.C. The super natant liq. is recycled to vessel C.
JP5406579A 1979-05-04 1979-05-04 Recycling and using method for washing waste water after isothermal hardening in salt bath carbonitriding or carburizing Granted JPS5633472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5406579A JPS5633472A (en) 1979-05-04 1979-05-04 Recycling and using method for washing waste water after isothermal hardening in salt bath carbonitriding or carburizing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5406579A JPS5633472A (en) 1979-05-04 1979-05-04 Recycling and using method for washing waste water after isothermal hardening in salt bath carbonitriding or carburizing

Publications (2)

Publication Number Publication Date
JPS5633472A true JPS5633472A (en) 1981-04-03
JPS5745632B2 JPS5745632B2 (en) 1982-09-29

Family

ID=12960207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5406579A Granted JPS5633472A (en) 1979-05-04 1979-05-04 Recycling and using method for washing waste water after isothermal hardening in salt bath carbonitriding or carburizing

Country Status (1)

Country Link
JP (1) JPS5633472A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185727A (en) * 1983-04-07 1984-10-22 Kawasaki Steel Corp Manufacture of cold rolled ferritic stainless steel plate having superior surface luster
JPS59193213A (en) * 1983-04-18 1984-11-01 Chugoku Shiyouene Kiki Hanbai Kk Salt removal of salt bath heat-treated steel
JPS6039181A (en) * 1983-08-10 1985-02-28 Sanyo Tokushu Seikou Kk Method for preventing surface roughening of stainless steel wire rod by pickling
JP2014205883A (en) * 2013-04-12 2014-10-30 パーカー熱処理工業株式会社 Salt-bath soft nitriding treatment method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185727A (en) * 1983-04-07 1984-10-22 Kawasaki Steel Corp Manufacture of cold rolled ferritic stainless steel plate having superior surface luster
JPH0222128B2 (en) * 1983-04-07 1990-05-17 Kawasaki Steel Co
JPS59193213A (en) * 1983-04-18 1984-11-01 Chugoku Shiyouene Kiki Hanbai Kk Salt removal of salt bath heat-treated steel
JPS6039181A (en) * 1983-08-10 1985-02-28 Sanyo Tokushu Seikou Kk Method for preventing surface roughening of stainless steel wire rod by pickling
JP2014205883A (en) * 2013-04-12 2014-10-30 パーカー熱処理工業株式会社 Salt-bath soft nitriding treatment method

Also Published As

Publication number Publication date
JPS5745632B2 (en) 1982-09-29

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